Seismic detection system and a method of operating the same
First Claim
1. A method of operating a seismic sensor comprising the:
- steps of;
(a) providing a seismic sensor, wherein the seismic sensor includes;
(1) a set of accelerometers that generate electronic signals in response to vibrations caused by an earthquake;
(2) a controller operationally coupled with the set of accelerometers and configured to receive the electronic signals and to determine whether the electronic signals represent an earthquake;
(3) a switch having a first and a second state, operationally coupled with the controller, wherein the controller changes the state of the switch upon detection of an earthquake; and
(4) a first enclosure for housing the set of accelerometers, the controller and the switch;
(b) connecting the seismic sensor to a control system, wherein the control system includes;
(1) a controller which is operationally coupled with the switch;
(2) a second enclosure, larger than the first enclosure, for housing the controller;
(c) fixedly mounting the seismic sensor adjacent to or inside of the control system;
(d) periodically dismounting the seismic sensor and placing the seismic sensor on a vibration table, wherein the vibration table is operated to simulate the condition of an earthquake so that the seismic sensor operates to change the state of the switch; and
(e) re-mounting the seismic sensor when the seismic sensor operates to change the state of the switch in response to the simulated condition of the earthquake.
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Accused Products
Abstract
A seismic switch is a programmable device capable of distinguishing between seismic movements due to an earthquake or an explosion, which is used to send a signal to control panels for security doors. The device uses accelerometers and a microcontroller for the detection and signal analysis of the seismic movements. In the event of an explosion or earthquake, the device produces a loud sound which serves as an audible alarm. Other proposed applications, with minor modifications to the device or software code, include monitoring of freight handling, emergency shut-off controller for industrial control systems and machinery, a by-pass system for electronic access control panels, and as a theft-deterrent or a component of a security system for automated teller machines and other valuable devices or items.
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Citations
14 Claims
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1. A method of operating a seismic sensor comprising the:
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steps of; (a) providing a seismic sensor, wherein the seismic sensor includes; (1) a set of accelerometers that generate electronic signals in response to vibrations caused by an earthquake; (2) a controller operationally coupled with the set of accelerometers and configured to receive the electronic signals and to determine whether the electronic signals represent an earthquake; (3) a switch having a first and a second state, operationally coupled with the controller, wherein the controller changes the state of the switch upon detection of an earthquake; and (4) a first enclosure for housing the set of accelerometers, the controller and the switch; (b) connecting the seismic sensor to a control system, wherein the control system includes; (1) a controller which is operationally coupled with the switch; (2) a second enclosure, larger than the first enclosure, for housing the controller; (c) fixedly mounting the seismic sensor adjacent to or inside of the control system; (d) periodically dismounting the seismic sensor and placing the seismic sensor on a vibration table, wherein the vibration table is operated to simulate the condition of an earthquake so that the seismic sensor operates to change the state of the switch; and (e) re-mounting the seismic sensor when the seismic sensor operates to change the state of the switch in response to the simulated condition of the earthquake. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of operating a seismic sensor comprising the steps of:
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(a) providing a seismic sensor configured to detect an earthquake, wherein the seismic sensor comprises; (1) a set of accelerometers that generate electronic signals in response to vibrations caused by an earthquake; (2) a controller operationally coupled with the set of accelerometers and configured to receive the electronic signals and to determine whether the electronic signals represent an earthquake; (3) a switch having a first and a second state, operationally coupled with the controller, wherein the controller chances the state of the switch upon detection of an earthquake; and (4) a first enclosure for housing the set of accelerometers, the controller and the switch, (b) fixedly mounting the seismic sensor; (c) periodically dismounting the seismic sensor and placing the seismic sensor on a vibration table, wherein the vibration table is operated to simulate the condition of an earthquake; (d) re-mounting the seismic sensor when the seismic sensor operates to detect an earthquake in response to the simulated condition of the earthquake; and (e) connecting the seismic sensor to a control system, wherein the control system includes; (1) controller which is operationally coupled with the switch; and (2) a second enclosure, larger than the first enclosure, for housing the controller. - View Dependent Claims (13, 14)
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Specification